End of Giants-Redskins game

[Eastshire]

Originally Posted by AremRed

Gentlemen I have not seen the Red Zone angle but this one angle looks pretty clear to me that he was tripped by the NT. The running back trips on something and the NT's hand looks close enough to make that contact.....why else would the running back start falling forward?

In the replays I've seen, I can't see a touch by the NT. Yet the runner starts to fall at that point. Is that conclusive evidence of a touch for down by contact? I would suggest it isn't conclusive evidence, but just evidence, and therefore not enough to base a replay ruling on.